./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-match-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05db099f-e755-4ea1-bb76-b80dfd59fe37/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05db099f-e755-4ea1-bb76-b80dfd59fe37/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05db099f-e755-4ea1-bb76-b80dfd59fe37/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05db099f-e755-4ea1-bb76-b80dfd59fe37/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/chl-match-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05db099f-e755-4ea1-bb76-b80dfd59fe37/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05db099f-e755-4ea1-bb76-b80dfd59fe37/bin/utaipan-verify-SwPr7d2a91 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2c931aeff3bd4feb775048ea000220a43a3b08d8a3667f51cb57a0babc9201aa --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:59:53,892 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:59:53,966 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05db099f-e755-4ea1-bb76-b80dfd59fe37/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-24 23:59:53,972 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:59:53,973 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:59:54,013 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:59:54,014 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:59:54,015 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:59:54,016 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:59:54,016 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:59:54,017 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:59:54,017 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:59:54,018 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:59:54,019 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:59:54,019 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:59:54,022 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:59:54,024 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:59:54,032 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:59:54,033 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:59:54,033 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:59:54,034 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:59:54,034 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:59:54,036 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:59:54,036 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:59:54,037 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:59:54,037 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:59:54,037 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:59:54,038 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:59:54,038 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:59:54,039 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:59:54,040 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:59:54,040 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-24 23:59:54,041 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 23:59:54,041 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:59:54,041 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:59:54,041 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:59:54,042 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:59:54,042 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:59:54,042 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:59:54,042 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:59:54,043 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:59:54,043 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:59:54,043 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:59:54,044 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:59:54,044 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:59:54,045 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:59:54,045 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:59:54,045 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:59:54,045 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:59:54,045 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05db099f-e755-4ea1-bb76-b80dfd59fe37/bin/utaipan-verify-SwPr7d2a91/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05db099f-e755-4ea1-bb76-b80dfd59fe37/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c931aeff3bd4feb775048ea000220a43a3b08d8a3667f51cb57a0babc9201aa [2023-11-24 23:59:54,340 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:59:54,362 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:59:54,365 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:59:54,366 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:59:54,367 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:59:54,368 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05db099f-e755-4ea1-bb76-b80dfd59fe37/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/weaver/chl-match-subst.wvr.c [2023-11-24 23:59:57,641 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:59:57,868 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:59:57,868 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05db099f-e755-4ea1-bb76-b80dfd59fe37/sv-benchmarks/c/weaver/chl-match-subst.wvr.c [2023-11-24 23:59:57,876 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05db099f-e755-4ea1-bb76-b80dfd59fe37/bin/utaipan-verify-SwPr7d2a91/data/2f38234f2/c02d8b29a5e9440cb738badedc9c3ebb/FLAGc582dd99b [2023-11-24 23:59:57,889 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05db099f-e755-4ea1-bb76-b80dfd59fe37/bin/utaipan-verify-SwPr7d2a91/data/2f38234f2/c02d8b29a5e9440cb738badedc9c3ebb [2023-11-24 23:59:57,892 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:59:57,893 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:59:57,894 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:59:57,895 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:59:57,907 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:59:57,907 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:59:57" (1/1) ... [2023-11-24 23:59:57,908 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29b02dcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:57, skipping insertion in model container [2023-11-24 23:59:57,909 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:59:57" (1/1) ... [2023-11-24 23:59:57,942 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:59:58,217 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:59:58,232 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:59:58,284 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:59:58,303 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:59:58,303 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:58 WrapperNode [2023-11-24 23:59:58,304 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:59:58,305 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:59:58,305 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:59:58,305 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:59:58,314 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:58" (1/1) ... [2023-11-24 23:59:58,332 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:58" (1/1) ... [2023-11-24 23:59:58,376 INFO L138 Inliner]: procedures = 23, calls = 35, calls flagged for inlining = 13, calls inlined = 23, statements flattened = 303 [2023-11-24 23:59:58,376 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:59:58,377 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:59:58,377 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:59:58,377 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:59:58,392 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:58" (1/1) ... [2023-11-24 23:59:58,392 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:58" (1/1) ... [2023-11-24 23:59:58,398 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:58" (1/1) ... [2023-11-24 23:59:58,399 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:58" (1/1) ... [2023-11-24 23:59:58,409 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:58" (1/1) ... [2023-11-24 23:59:58,414 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:58" (1/1) ... [2023-11-24 23:59:58,434 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:58" (1/1) ... [2023-11-24 23:59:58,436 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:58" (1/1) ... [2023-11-24 23:59:58,441 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:59:58,442 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:59:58,443 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:59:58,443 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:59:58,444 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:58" (1/1) ... [2023-11-24 23:59:58,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:59:58,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05db099f-e755-4ea1-bb76-b80dfd59fe37/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:59:58,476 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05db099f-e755-4ea1-bb76-b80dfd59fe37/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:59:58,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05db099f-e755-4ea1-bb76-b80dfd59fe37/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:59:58,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:59:58,529 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-24 23:59:58,529 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-24 23:59:58,530 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-24 23:59:58,530 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-24 23:59:58,532 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-24 23:59:58,532 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-24 23:59:58,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:59:58,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:59:58,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 23:59:58,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:59:58,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:59:58,534 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-24 23:59:58,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:59:58,536 WARN L213 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-24 23:59:58,696 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:59:58,698 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:59:59,387 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:59:59,800 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:59:59,801 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 23:59:59,801 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:59:59 BoogieIcfgContainer [2023-11-24 23:59:59,802 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:59:59,806 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:59:59,806 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:59:59,810 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:59:59,810 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:59:57" (1/3) ... [2023-11-24 23:59:59,812 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20b6364a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:59:59, skipping insertion in model container [2023-11-24 23:59:59,813 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:59:58" (2/3) ... [2023-11-24 23:59:59,814 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20b6364a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:59:59, skipping insertion in model container [2023-11-24 23:59:59,815 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:59:59" (3/3) ... [2023-11-24 23:59:59,816 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-match-subst.wvr.c [2023-11-24 23:59:59,829 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-24 23:59:59,840 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:59:59,841 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 36 error locations. [2023-11-24 23:59:59,841 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 23:59:59,954 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-24 23:59:59,996 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 125 places, 127 transitions, 275 flow [2023-11-25 00:00:03,875 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 83364 states, 81168 states have (on average 3.8302409816676524) internal successors, (310893), 83363 states have internal predecessors, (310893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:00:03,902 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-25 00:00:03,911 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7c12955, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-25 00:00:03,911 INFO L358 AbstractCegarLoop]: Starting to check reachability of 75 error locations. [2023-11-25 00:00:04,168 INFO L276 IsEmpty]: Start isEmpty. Operand has 83364 states, 81168 states have (on average 3.8302409816676524) internal successors, (310893), 83363 states have internal predecessors, (310893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:00:04,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-25 00:00:04,183 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:00:04,184 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-25 00:00:04,185 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-25 00:00:04,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:00:04,210 INFO L85 PathProgramCache]: Analyzing trace with hash 860760334, now seen corresponding path program 1 times [2023-11-25 00:00:04,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:00:04,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662899530] [2023-11-25 00:00:04,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:00:04,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:00:04,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:00:04,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:00:04,686 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:00:04,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662899530] [2023-11-25 00:00:04,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662899530] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:00:04,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:00:04,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-25 00:00:04,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000751626] [2023-11-25 00:00:04,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:00:04,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-25 00:00:04,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:00:04,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-25 00:00:04,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-25 00:00:04,922 INFO L87 Difference]: Start difference. First operand has 83364 states, 81168 states have (on average 3.8302409816676524) internal successors, (310893), 83363 states have internal predecessors, (310893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:00:07,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:00:07,750 INFO L93 Difference]: Finished difference Result 121476 states and 455079 transitions. [2023-11-25 00:00:07,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-25 00:00:07,753 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-25 00:00:07,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:00:09,640 INFO L225 Difference]: With dead ends: 121476 [2023-11-25 00:00:09,659 INFO L226 Difference]: Without dead ends: 121476 [2023-11-25 00:00:09,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-25 00:00:09,667 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 205 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-25 00:00:09,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 284 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-25 00:00:10,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121476 states. [2023-11-25 00:00:14,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121476 to 97656. [2023-11-25 00:00:15,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97656 states, 95798 states have (on average 3.8408004342470616) internal successors, (367941), 97655 states have internal predecessors, (367941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:00:16,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97656 states to 97656 states and 367941 transitions. [2023-11-25 00:00:16,640 INFO L78 Accepts]: Start accepts. Automaton has 97656 states and 367941 transitions. Word has length 5 [2023-11-25 00:00:16,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:00:16,641 INFO L495 AbstractCegarLoop]: Abstraction has 97656 states and 367941 transitions. [2023-11-25 00:00:16,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:00:16,642 INFO L276 IsEmpty]: Start isEmpty. Operand 97656 states and 367941 transitions. [2023-11-25 00:00:16,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-25 00:00:16,643 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:00:16,643 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-25 00:00:16,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-25 00:00:16,647 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-25 00:00:16,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:00:16,649 INFO L85 PathProgramCache]: Analyzing trace with hash 913767586, now seen corresponding path program 1 times [2023-11-25 00:00:16,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:00:16,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642287114] [2023-11-25 00:00:16,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:00:16,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:00:16,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:00:16,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:00:16,815 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:00:16,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642287114] [2023-11-25 00:00:16,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642287114] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:00:16,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:00:16,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-25 00:00:16,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881835714] [2023-11-25 00:00:16,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:00:16,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-25 00:00:16,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:00:16,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-25 00:00:16,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-25 00:00:16,820 INFO L87 Difference]: Start difference. First operand 97656 states and 367941 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:00:18,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:00:18,797 INFO L93 Difference]: Finished difference Result 107184 states and 402795 transitions. [2023-11-25 00:00:18,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-25 00:00:18,800 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-25 00:00:18,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:00:19,665 INFO L225 Difference]: With dead ends: 107184 [2023-11-25 00:00:19,665 INFO L226 Difference]: Without dead ends: 107184 [2023-11-25 00:00:19,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:00:19,668 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 213 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-25 00:00:19,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 176 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-25 00:00:19,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107184 states. [2023-11-25 00:00:23,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107184 to 95274. [2023-11-25 00:00:23,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95274 states, 93585 states have (on average 3.8385104450499545) internal successors, (359227), 95273 states have internal predecessors, (359227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:00:25,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95274 states to 95274 states and 359227 transitions. [2023-11-25 00:00:25,313 INFO L78 Accepts]: Start accepts. Automaton has 95274 states and 359227 transitions. Word has length 6 [2023-11-25 00:00:25,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:00:25,314 INFO L495 AbstractCegarLoop]: Abstraction has 95274 states and 359227 transitions. [2023-11-25 00:00:25,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:00:25,315 INFO L276 IsEmpty]: Start isEmpty. Operand 95274 states and 359227 transitions. [2023-11-25 00:00:25,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-25 00:00:25,316 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:00:25,316 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:00:25,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-25 00:00:25,317 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-25 00:00:25,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:00:25,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1738006670, now seen corresponding path program 1 times [2023-11-25 00:00:25,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:00:25,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750442096] [2023-11-25 00:00:25,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:00:25,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:00:25,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:00:25,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:00:25,427 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:00:25,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750442096] [2023-11-25 00:00:25,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750442096] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:00:25,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:00:25,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-25 00:00:25,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522180478] [2023-11-25 00:00:25,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:00:25,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-25 00:00:25,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:00:25,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-25 00:00:25,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-25 00:00:25,430 INFO L87 Difference]: Start difference. First operand 95274 states and 359227 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:00:27,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:00:27,343 INFO L93 Difference]: Finished difference Result 92892 states and 350513 transitions. [2023-11-25 00:00:27,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-25 00:00:27,344 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-25 00:00:27,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:00:28,293 INFO L225 Difference]: With dead ends: 92892 [2023-11-25 00:00:28,293 INFO L226 Difference]: Without dead ends: 92892 [2023-11-25 00:00:28,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:00:28,298 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 206 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-25 00:00:28,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 176 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-25 00:00:28,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92892 states. [2023-11-25 00:00:31,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92892 to 92892. [2023-11-25 00:00:32,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92892 states, 91372 states have (on average 3.8361095302718557) internal successors, (350513), 92891 states have internal predecessors, (350513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:00:32,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92892 states to 92892 states and 350513 transitions. [2023-11-25 00:00:32,565 INFO L78 Accepts]: Start accepts. Automaton has 92892 states and 350513 transitions. Word has length 7 [2023-11-25 00:00:32,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:00:32,566 INFO L495 AbstractCegarLoop]: Abstraction has 92892 states and 350513 transitions. [2023-11-25 00:00:32,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:00:32,566 INFO L276 IsEmpty]: Start isEmpty. Operand 92892 states and 350513 transitions. [2023-11-25 00:00:32,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-25 00:00:32,567 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:00:32,567 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:00:32,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-25 00:00:32,568 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2023-11-25 00:00:32,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:00:32,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1803006727, now seen corresponding path program 1 times [2023-11-25 00:00:32,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:00:32,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041940747] [2023-11-25 00:00:32,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:00:32,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:00:32,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:00:32,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:00:32,704 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:00:32,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041940747] [2023-11-25 00:00:32,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041940747] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:00:32,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:00:32,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-25 00:00:32,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711278310] [2023-11-25 00:00:32,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:00:32,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-25 00:00:32,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:00:32,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-25 00:00:32,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-25 00:00:32,707 INFO L87 Difference]: Start difference. First operand 92892 states and 350513 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:00:35,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:00:35,113 INFO L93 Difference]: Finished difference Result 136540 states and 516925 transitions. [2023-11-25 00:00:35,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-25 00:00:35,114 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-25 00:00:35,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:00:35,945 INFO L225 Difference]: With dead ends: 136540 [2023-11-25 00:00:35,946 INFO L226 Difference]: Without dead ends: 136540 [2023-11-25 00:00:35,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-25 00:00:35,948 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 174 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-25 00:00:35,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 316 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-25 00:00:36,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136540 states. [2023-11-25 00:00:40,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136540 to 109260. [2023-11-25 00:00:40,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109260 states, 107974 states have (on average 3.8558264026524904) internal successors, (416329), 109259 states have internal predecessors, (416329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)